Real-time public transport vehicle tracker. Track buses, trams, metros, trains, and ferries live on the map.

Live: https://busmap.netlify.app

• 🚌 Real-time vehicle tracking - See vehicles move on the map in real-time via HSL's MQTT feed
• ⭐ Saved routes mode - Track your favorite routes and they'll load automatically when you open the app
• 📍 Nearby mode - Discover all vehicles in your current area
• 🗺️ Smooth WebGL map - Powered by MapLibre GL JS for 60fps animations
• 📱 Mobile-first PWA - Install as an app on your phone
• 🌙 Dark mode - Automatic or manual theme switching
• ⚡ Fast startup - Cached routes load instantly

1. Register for a Digitransit API key at https://portal-api.digitransit.fi/
2. Node.js 18+ installed

# Install dependencies
npm install

# Create .env file with your API key
cp .env.example .env
# Edit .env and add your VITE_DIGITRANSIT_API_KEY

# Start development server
npm run dev

npm run build
npm run preview

• Frontend: React 18, TypeScript
• Build: Vite
• Maps: MapLibre GL JS + react-map-gl
• Styling: Tailwind CSS
• State: Zustand
• Data fetching: TanStack React Query
• Animations: Framer Motion
• Real-time: MQTT.js (HSL HFP feed)
• API: Digitransit GraphQL API
• PWA: Workbox via vite-plugin-pwa

• MQTT feed (mqtt.hsl.fi): Free, no authentication required. Provides real-time vehicle positions.
• Digitransit Routing API: Requires registration and API key. Used for route list and polylines.

MIT